$ telnet
telnet> toggle crlf
Will send carriage returns as telnet <CR><LF>.
telnet> toggle crlf
Will send carriage returns as telnet <CR><NUL>.
telnet> set netdata
Will print hexadecimal representation of network traffic.
telnet> set prettydump
Will print user readable output for "netdata".
telnet> open x.x.x.x xxxx
Trying x.x.x.x xxxx...
Connected to x.x.x.x.
Escape character is '^]'.
QD
> 0x0    51 44 0d 0a
< 0x0    42 41 44 44 0d 0a
BADD